I am curious if anyone has seen and tried the brass screw tweak as seen in the Virtual Dynamics "Oddiophile" videos?In particular, I am interested in the brass metric machine screw with the insert. Sounds rather interesting. Could anyone offer any insight or relay experience? Are any manufacturers using this tweak? The address is below. Episode one is the first tweak, episode number six is the advanced version, the one I am most interested in.Thanks.

Have had customers request non ferrous I have not heard or measured any difference in sound quality for the better using non ferrous fasteners. I had loudspeakers that where the same except one pair had non ferrous fasteners. Tried it on a few different designs. Still I will experiment more with this.

I tried to watch the episode on electromagneteic interference, and was so disgusted with the "science" presented that I simply couldn't stomach it . . . the person in the video demonstrated a complete ignorance of some of the basic physics of electromagnetism, including:

- not understanding the difference between actually shielding a magnetic field, and simply shorting out the eddy current it creates

- trying to discuss the electromagnetic field created by (current flowing in) a single conductor (i.e., no return path). What next, the sound of one hand clapping?

- not understanding the effect of the twisted-pair geometry on his sacrificial ("other brands") cables, and the effect this will have on radiation of (and suceptibility to) electromagnetic fields

- (and my favorite) - implying that the aluminimum (!) foil wrap in his cables is an effective shield against a magnetic field (magnetic shields cannot be non-ferrous!)

After his introduction, I was honestly expecting for him to show us a cable ensconsed in some sort of flexible high-permability metal conduit . . . that is, actual magnetic shielding! But instead, I got a "science lesson" that makes an episode of Mythbusters look like Newton's Principia.

I used "brass" screws instead of the oh so typical steel bolts that we are all so accustomed to seeing on Mrs Frankensteins neck, on my wife...and I must admit, her shrieks were almost tolerable. NOW THATS A TWEAK!!!

Late replying, but I have been bust @ work......For the record, I have ordered a set of brass wood screws to try first, and a set of brass metric machine screws and inserts.First, I will try the wood screws, and at a later date, if there is room in the cabinet, the inserts (I want to try this as I am considering Bybees, and Quicksilver Gold contact treatment on spade connectors to all drivers, and do not want to damage the cabinets with excessive removal and install of the drivers.)

I'll have to try for myself. I will post my findings, but it will take a while. We are renovating, and will not have system back together for some time.

For the record, I have receiver four private emails from members who do not want to post on the thread, all claiming to have tried the brass screws, and all claim positive effects.

Personally, I would not hack the "F" out of my speakers in attempt to "possibly" find a sonic gain. Once you drill those cabinets you can't go back. When it comes to speakers, the cabinets is what you pay big bucks for. Please no follow ups on the where money is spent when manufacturing speakers with regards to drivers vs. cabinets.